const accountInfo = wx.getAccountInfoSync();
accountInfo.miniProgram.envVersion会有三个值：

1. develop：开发版（正常开发工具，测试时）
2. trial：体验版
3. release：正式版

  onLaunch() {
    const accountInfo = wx.getAccountInfoSync();
    switch (accountInfo.miniProgram.envVersion) {
      case 'develop':
        this.globalData.url = 'http://192.168.0.252:3000/api'; // 宁
        break;
      case 'trial':
        this.globalData.url = 'https://www.baidu.com/api';
        break;
      case 'release':
        this.globalData.url = 'https://www.qq.com/api';
        break;
      default:
        this.globalData.url = 'https://www.360.com/api';
        break;
    }
    console.log(accountInfo)
  }